diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.8/008-mmc_mvsdio_implement_a_device_tree_binding.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.8/008-mmc_mvsdio_implement_a_device_tree_binding.patch | 60 |
1 files changed, 42 insertions, 18 deletions
diff --git a/target/linux/mvebu/patches-3.8/008-mmc_mvsdio_implement_a_device_tree_binding.patch b/target/linux/mvebu/patches-3.8/008-mmc_mvsdio_implement_a_device_tree_binding.patch index 7aa785667..baec5a146 100644 --- a/target/linux/mvebu/patches-3.8/008-mmc_mvsdio_implement_a_device_tree_binding.patch +++ b/target/linux/mvebu/patches-3.8/008-mmc_mvsdio_implement_a_device_tree_binding.patch @@ -1,3 +1,20 @@ +From patchwork Wed Jan 16 13:13:59 2013 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [4/5] mmc: mvsdio: implement a Device Tree binding +Date: Wed, 16 Jan 2013 13:13:59 -0000 +From: Andrew Lunn <andrew@lunn.ch> +X-Patchwork-Id: 1987921 +Message-Id: <1358342040-7130-5-git-send-email-andrew@lunn.ch> +To: Jason Cooper <jason@lakedaemon.net> +Cc: linux ARM <linux-arm-kernel@lists.infradead.org>, + linux-mmc@vger.kernel.org, linux@arm.linux.org.uk, + Thomas Petazzoni <thomas.petazzoni@free-electrons.com>, + Andrew Lunn <andrew@lunn.ch> + +From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> + This patch adds a simple Device Tree binding for the mvsdio driver, as well as the necessary documentation for it. Compatibility with non-DT platforms is preserved, by keeping the platform_data based @@ -11,10 +28,15 @@ reference is not mandatory, but the clock frequency must be passed in the "clock" field of the mvsdio_platform_data structure. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> +Signed-off-by: Andrew Lunn <andrew@lunn.ch> +Tested-by: Stefan Peter <s.peter@mpl.ch> +Tested-by: Florian Fainelli <florian@openwrt.org> +Signed-off-by: Jason Cooper <jason@lakedaemon.net> + --- - .../devicetree/bindings/mmc/orion-sdio.txt | 17 ++++++ - drivers/mmc/host/mvsdio.c | 60 +++++++++++++++----- - 2 files changed, 62 insertions(+), 15 deletions(-) +.../devicetree/bindings/mmc/orion-sdio.txt | 17 ++++++ + drivers/mmc/host/mvsdio.c | 62 +++++++++++++++----- + 2 files changed, 64 insertions(+), 15 deletions(-) create mode 100644 Documentation/devicetree/bindings/mmc/orion-sdio.txt --- /dev/null @@ -48,7 +70,7 @@ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> #include <linux/mmc/host.h> #include <linux/mmc/slot-gpio.h> -@@ -683,17 +685,17 @@ mv_conf_mbus_windows(struct mvsd_host *h +@@ -681,17 +683,17 @@ mv_conf_mbus_windows(struct mvsd_host *h static int __init mvsd_probe(struct platform_device *pdev) { @@ -68,19 +90,20 @@ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> + if (!r || irq < 0) return -ENXIO; - r = request_mem_region(r->start, SZ_1K, DRIVER_NAME); -@@ -710,7 +712,35 @@ static int __init mvsd_probe(struct plat + mmc = mmc_alloc_host(sizeof(struct mvsd_host), &pdev->dev); +@@ -703,8 +705,37 @@ static int __init mvsd_probe(struct plat + host = mmc_priv(mmc); host->mmc = mmc; host->dev = &pdev->dev; - host->res = r; - host->base_clock = mvsd_data->clock / 2; +- host->clk = ERR_PTR(-EINVAL); + + /* Some non-DT platforms do not pass a clock, and the clock + frequency is passed through platform_data. On DT platforms, + a clock must always be passed, even if there is no gatable + clock associated to the SDIO interface (it can simply be a + fixed rate clock). */ -+ host->clk = clk_get(&pdev->dev, NULL); ++ host->clk = devm_clk_get(&pdev->dev, NULL); + if (!IS_ERR(host->clk)) + clk_prepare_enable(host->clk); + @@ -97,8 +120,10 @@ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> + } else { + const struct mvsdio_platform_data *mvsd_data; + mvsd_data = pdev->dev.platform_data; -+ if (!mvsd_data) -+ return -ENXIO; ++ if (!mvsd_data) { ++ ret = -ENXIO; ++ goto out; ++ } + host->base_clock = mvsd_data->clock / 2; + gpio_card_detect = mvsd_data->gpio_card_detect; + gpio_write_protect = mvsd_data->gpio_write_protect; @@ -106,16 +131,15 @@ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> mmc->ops = &mvsd_ops; -@@ -750,21 +780,14 @@ static int __init mvsd_probe(struct plat - } else - host->irq = irq; +@@ -743,20 +774,14 @@ static int __init mvsd_probe(struct plat + goto out; + } - /* Not all platforms can gate the clock, so it is not - an error if the clock does not exists. */ -- host->clk = clk_get(&pdev->dev, NULL); -- if (!IS_ERR(host->clk)) { +- host->clk = devm_clk_get(&pdev->dev, NULL); +- if (!IS_ERR(host->clk)) - clk_prepare_enable(host->clk); -- } - - if (gpio_is_valid(mvsd_data->gpio_card_detect)) { - ret = mmc_gpio_request_cd(mmc, mvsd_data->gpio_card_detect); @@ -131,7 +155,7 @@ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> setup_timer(&host->timer, mvsd_timeout_timer, (unsigned long)host); platform_set_drvdata(pdev, mmc); -@@ -776,7 +799,7 @@ static int __init mvsd_probe(struct plat +@@ -768,7 +793,7 @@ static int __init mvsd_probe(struct plat mmc_hostname(mmc), DRIVER_NAME); if (!(mmc->caps & MMC_CAP_NEEDS_POLL)) printk("using GPIO %d for card detection\n", @@ -140,7 +164,7 @@ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> else printk("lacking card detect (fall back to polling)\n"); return 0; -@@ -855,12 +878,19 @@ static int mvsd_resume(struct platform_d +@@ -832,12 +857,19 @@ static int mvsd_resume(struct platform_d #define mvsd_resume NULL #endif |